Replaceable Eco Friendly Filter Cartridges | Paper-Based with zero-plastic. Save money with filters instead of buying an entirely new smoke filter unit 5 Stage HEPA & Carbon Filtration | Activated carbon derive from bamboo and coconut traps and eliminates smell from smoke 500+ Exhales | The design of each filter allows for 500+ exhales. A longer lasting, environmentally friendly personal air filter solution! Easy to Replace | Simply remove the silicone mouthpiece, then fit the filter in the bottom. Then you’re good as new! PRO TIP: Swap out filters periodically to further extend filter life. North American Owned & Operated | ONGROK is a proud, North American Small Business, dedicated to enhancing user experience with quality accessories. In the rare instance you are ever dissatisfied with your purchase, give us a shout, and we'll be sure to make things right!